<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <img src="./images/1.webp" alt="">
  <script>
    // 取到 N ~ M 的随机整数  公式 
    // 1-6    
    function random(n, m) {
      return Math.floor(Math.random() * (m - n + 1)) + n;
    }
    // 1. 获取图片对象
    let img = document.querySelector(`img`);
    // 2. 更换路径
    img.src = `./images/${random(1, 6)}.webp`;
  </script>
</body>

</html>